FLUX.2 [klein] is the new open weights image model from Black Forest Labs, with the 9B variant ranking as the top open weights image editing model in the Artificial Analysis Image Editing Arena! FLUX.2 [klein] is the spiritual successor to FLUX.1 [schnell] from @bfl_ml, released Show more
Blazing-Fast Unlimited FLUX.2 Klein Text to Image & Image Editing Generator (4B/9B)
This is Black Forest Labs' fastest line of AI image models, offered in both 4B and 9B variants. It produces gorgeous high-quality images in under a second, with built-in unified text-to-image and image editing tools, and runs on consumer-grade GPUs with as little as 13GB of VRAM.
FLUX.2 Klein Text to Image Showcase
Get lightning-fast sub-second image generation from both the 4B and 9B variants of FLUX.2 Klein










Teotihuacán Pyramids (4B)
Stunning ancient pyramids paired with a futuristic Saturn hanging in the sky, boasting rich cinematic depth and atmospheric perspective
“ancient monumental Teotihuacán pyramids illuminated by red lights, in the sky a giant Saturn suspended in the sky, sculptural and non-astronomical, with rings of liquid metal, futuristic yet archaic, evoking a sacred portal rather than a planet”
FLUX.2 Klein Image Edit Showcase
Revamp any image in less than a second with the powerful smart AI editing capabilities of FLUX.2 Klein





















FLUX.2 Klein YouTube Videos
Watch demonstrations and tutorials showcasing Black Forest Labs FLUX.2 Klein's ultra-fast AI image generation and editing capabilities
FLUX.2 Klein Popular Reviews on X
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FLUX.2 Klein is here, and it come in 2 flavors: 9B parameters 4B parameters Both with a base model (!) and a 4-step distilled one 9B has the traditional FLUX.2 non-commercial license 4B is Apache 2.0 🙌 Try it out 👇
Introducing FLUX.2 [klein]. Blazing fast. Beautiful. Generate stunning images in under a second while maintaining exceptional quality. Great for fast editing, changing styles, and developing ideas from 0 → 1. Available via API, or run it locally - Klein 4B under Apache 2.0,
FLUX.2 [klein] is out & optimized to run best on RTX GPUs. Try it out & share your creations! 👇
We're also releasing FP8 and NVFP4 quantized variants, built in collaboration with @NVIDIA_AI_PC for optimized inference on RTX GPUs. • FP8: Up to 1.6x faster, 40% less VRAM • NVFP4: Up to 2.7x faster, 55% less VRAM Run FLUX.2 [klein] on even more hardware.
FLUX.2[klein] new image model from BFL
Introducing FLUX.2 [klein]. Blazing fast. Beautiful. Generate stunning images in under a second while maintaining exceptional quality. Great for fast editing, changing styles, and developing ideas from 0 → 1. Available via API, or run it locally - Klein 4B under Apache 2.0,
🚨FLUX.2 [klein] by @bfl_ml is now available in the Image Edit and Text-to-Image Arenas. Built for speed we have: 🔹flux.2-klein-9B 🔹flux.2-klein-4B (Apache 2.0) Test them head-to-head against other frontier AI models, and then vote to see where it ranks on the leaderboard.
Introducing FLUX.2 [klein]. Blazing fast. Beautiful. Generate stunning images in under a second while maintaining exceptional quality. Great for fast editing, changing styles, and developing ideas from 0 → 1. Available via API, or run it locally - Klein 4B under Apache 2.0,
What's FLUX.2 Klein
Black Forest Labs' fastest compact model family for sub-second image generation and editing
FLUX.2 Klein is a revolutionary compact model family that unifies text-to-image generation and image editing in a single architecture, delivering state-of-the-art quality in under a second.
What's FLUX.2 Klein
Black Forest Labs' fastest compact model family for sub-second image generation and editing
FLUX.2 Klein is a revolutionary compact model family that unifies text-to-image generation and image editing in a single architecture, delivering state-of-the-art quality in under a second.
Frequently Asked Questions for FLUX.2 Klein
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Step-by-Step Guide to Using FLUX.2 Klein Text to Image
Create custom images in less than one second with the fastest available FLUX model
Type out a full, detailed description of the custom image you want to make. For best possible results, add details about subject, style, lighting, mood, and composition. FLUX.2 Klein supports both 4B and 9B variants.
Flexible AI Pricing
Pay-as-you-go credits or subscription plans. No hidden fees, cancel anytime.
